/*
 * Copyright (c) 2012 Robert Burrell Donkin robertburrelldonkin.name
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
 * and associated documentation files (the "Software"), to deal in the Software without restriction, 
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, 
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software 
 * is furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all copies or 
 * substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 */
package walrus.unpack.xml;

import java.io.File;
import java.nio.BufferOverflowException;

import walrus.base.ArticleBuffer;

public class ArticleLoader extends DumpParser {

	private ArticleBuffer buffer;
	
	public ArticleLoader(File target) {
		super(target);
	}

	@Override
	protected void startSection(Section section) {
		if (section == Section.TITLE) {
			buffer = next();
			buffer.reset();
		}
	}

	protected ArticleBuffer next() {
		if (buffer == null) {
			buffer = new ArticleBuffer();
		}
		return buffer;
	}
	
	@Override
	protected void text(char[] ch, int start, int length) {
		try {
			if (buffer != null) {
				buffer.text(ch, start, length);
			}
		} catch (BufferOverflowException e) {
			throw new RuntimeException("Overflow " + buffer);
		}
	}
	
	@Override
	protected void title(char[] ch, int start, int length) {
		if (buffer != null) {
			buffer.title(ch, start, length);
		}
	}

	@Override
	protected void endText() {
	}

	protected ArticleBuffer retireBuffer() {
		final ArticleBuffer buffer = this.buffer;
		this.buffer = null;
		return buffer;
	}
	
	
}
